Home / 22,278.24-30,745.26-12,720.96

Finding the Fourth Proportional to 22,278.24, 30,745.26 and 12,720.96

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Solution

The fourth proportional to 22,278.24, 30,745.26 and 12,720.96 is: 17,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.24 : 30,745.26 = 12,720.96 : x
  2. Step 2: Convert to fraction form
    22,278.24/30,745.26 = 12,720.96/x
  3. Step 3: Cross multiply
    22,278.24x = 30,745.26 × 12,720.96
  4. Step 4: Simplify right side
    22,278.24x = 391,109,222.65
  5. Step 5: Solve for x
    x = 391,109,222.65/22,278.24
  6. Step 6: Final answer
    x = 17,555.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.